光电效应实验中阳极光电流的测量  

Measuring anodic photocurrent in photoelectric effect experiment

作　　者：陈若辉[1] 王海燕[2] 

机构地区：[1]北华大学物理学院,吉林吉林132013 [2]吉林化工学院理学院,吉林吉林132022

出　　处：《物理实验》2012年第1期6-9,共4页Physics Experimentation

摘　　要：分析了光电效应实验中阳极光电流和阴极光电流的形成机理.探索了二者之间的关系.阳极光电流值的K倍与阴极光电流值关于原点对称,因此当K足够大时,用电压大于0时的实测电流值代替阴极光电流值,可以求得电压小于0时的阳极光电流值.The mechanism of anodic and cathodic photocurrent in photoelectric effect experiment was analyzed, and the relationship between them was researched. Because of the mirror symmetry be- tween K times the anodic photocurrent intensity and the cathodic photocurrent intensity, the cathodic photocurrent could be replaced by the measured current intensity when K was large enough and the voltage was greater than zero. Thus the anodic photocurrent value could be calculated when the volt- age value was less than zero.

关 键 词：阳极光电流 阴极光电流 光电效应 

分 类 号：O462.3[理学—电子物理学]